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Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Testing was conducted between 04 March 2005 and 30 March 2005. Final report was issued 13 June 2005.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Meets the criteria for classification as reliable without restriction according to Klimisch et al (1997).

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005
Report date:
2005

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
yes
Type of method:
cascade impaction
Type of distribution:
volumetric distribution

Test material

Constituent 1
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Particle size
Key result
Percentile:
other: proportion of test material with particle size < 100 um
Remarks on result:
other: 71% of test material is < 100 um
Particle size distribution at different passagesopen allclose all
No.:
#1
Size:
< 100 µm
Distribution:
ca. 71 %
No.:
#2
Size:
< 10.2 µm
Distribution:
ca. 4.52 %
No.:
#3
Size:
< 5.4 µm
Distribution:
ca. 1.35 %

Applicant's summary and conclusion

Conclusions:
The proportion of test material having a particle size less than 100 um was determioend to be 71%
Executive summary:

Introduction

The method used is designed to comply with that given in 'Particle Size Distribution, Fibre Length and Diameter Distribution', June 1996 European Commission technical guidance document, which satisfies the requirements of OECD Guideline 1 10.

Results and conclusions

Particle size data acquired for the test material are shown in the following table:

 Measurement  Method  Result
 Proportion of test material having an inhalable particle size les than 100µm  sieve  71%
 Proportion of test material having a thoracic particle size less than 10.2µm  Cascade Impactor  4.52%
 Proportion of test material having a respirable particle size less than 5.4µm  Cascade Impactor  1.35%